CN210811958U

CN210811958U - Ophthalmologic microsurgery instrument

Info

Publication number: CN210811958U
Application number: CN201921387405.XU
Authority: CN
Inventors: 陈松; 李菊敏; 李忠泽; 姜西伟
Original assignee: Suzhou Bili Medical Technology Co ltd
Current assignee: Suzhou Bili Medical Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-23
Anticipated expiration: 2029-08-29

Abstract

The technical scheme of the utility model discloses an ophthalmologic microsurgery instrument and an operation method thereof, which comprises a needle seat, a hoop, a connector and a handle which are detachably connected in sequence; the needle seat is inserted with a sleeve, the hoop is provided with a claw piece group, an inner core with tweezers is arranged in the sleeve, the claw piece group controls the T-shaped block to move, the T-shaped block pushes the push block to move, the push block pushes the sliding block to move, the sleeve and the sliding block move synchronously, the sleeve contracts the tweezers in the moving process, and the tweezers are clamped tightly. The utility model discloses a set up 360 claw piece groups on the circumferencial direction of cuff for the claw piece atress is even stable when mediating, avoids axial or radial unnecessary to remove. The inner core is clamped by the claw sheets, and the inner core is loosened by loosening the claw sheets, so that the operation is portable. The handle and the hoop are detachably arranged, so that surgical instruments with claw sheets with different structures or tools with different inner core heads can be conveniently replaced in different operations.

Description

Ophthalmologic microsurgery instrument

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a microsurgical instrument of ophthalmology.

Background

In the prior ophthalmic microsurgery, the conventional ophthalmic surface and fundus surgery instruments are all in an A-shaped opening mode, and the instruments are easy to tear an operative incision in the surgical process due to the problems of uneven stress, radial shaking and movement and the like during operation. The handles of the instrument with the A-shaped opening mode for the eye surface and fundus surgery are of two-piece holding type structures in the market at present, and the handles of the two-piece holding type surgical instrument are prone to causing uneven stress in the using process to cause unnecessary radial or axial movement in the surgery process, and finally cause the instrument to damage the internal structure of the eye. In addition, in the operation process, if a doctor needs to change the holding direction of the surgical instrument, the direction of the two spring pieces of the instrument with the two holding structures is limited, and the doctor can only keep a fixed posture for performing the operation, so that the flexibility of the doctor in the operation process is greatly limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be that the atress is inhomogeneous easily appears in the apparatus of "A" style of calligraphy opening mode of current ocular surface eye ground operation, radial shake removes the scheduling problem and causes the operation incision to tear at the operation in-process, finally leads to apparatus damage eyes inner structure, and current surgical instruments can only keep a fixed posture to perform the operation simultaneously, great restriction doctor the flexibility ratio of operation in-process.

In order to solve the above technical problem, the utility model discloses technical scheme provides an ophthalmic microsurgical instrument, wherein, include:

the needle seat, the hoop, the connector and the handle are detachably connected in sequence;

the end part of the needle seat is inserted with a sleeve, a claw piece group is movably arranged in the circumferential direction of the hoop, and a push block is arranged in the needle seat;

an inner core is penetratingly arranged in the sleeve, the head of the inner core is provided with tweezers, and the tail of the inner core is exposed out of the sleeve and fixed in the needle seat;

a sliding block is arranged in the needle seat and close to the position of the sleeve, a through hole for inserting the sleeve and passing through the inner core is arranged on the sliding block in a penetrating manner, a spring is sleeved outside the sliding block, and two ends of the spring are respectively abutted against the inner wall of the needle seat and a flange of the sliding block;

a T-shaped block is movably arranged in the hoop, two ends of the T-shaped block are respectively connected with the claw piece group and the push block, and one end of the push block, which is connected with the T-shaped block, is in contact with the sliding block;

the T-shaped block is controlled by the claw group to move, the T-shaped block pushes the push block to move, the push block pushes the sliding block to move, the sleeve and the sliding block move synchronously, the sleeve contracts the tweezers in the moving process, and the tweezers are clamped tightly.

Optionally, the claw sheet set comprises a plurality of claw sheets which are arranged around the side wall of the hoop in an umbrella shape and movably arranged in the hoop;

the two sides of one end of each claw sheet in the hoop are respectively provided with a rotating groove and an inserting piece, the hoop is provided with an inner protrusion matched with the contour of the rotating groove at the position where each claw sheet is installed, and each claw sheet is rotatably installed in the hoop through the matching of the inner protrusion and the rotating groove;

the T-shaped block is provided with an insertion groove at the position connected with each claw piece, and the insertion piece of each claw piece is inserted into the insertion groove and connected with the T-shaped block;

each claw piece rotates with the inner protrusion as a circle center to be close to or far away from the handle, when each claw piece is close to the handle, the claw piece group is in a closed umbrella shape, the inserting piece rotates towards the rotating direction of each claw piece and pushes the T-shaped block towards the direction of the same side with the rotating direction of the inserting piece.

Optionally, at least two positioning pins are installed in the needle base, and a space for fixing the tail of the inner core is formed between the at least two positioning pins; each positioning pin is in threaded connection with the inside of the needle seat, and at least two positioning pins are screwed relatively and clamp and fix the tail part of the inner core in the space.

Optionally, the both ends of ejector pad contact respectively the sliding block with T type piece, the central point of ejector pad is equipped with from top to bottom with running through and is used for supplying the dodge hole that the locating pin passed, the length in dodge hole is greater than the stroke distance of T type piece, the confession has been seted up respectively at the both ends of ejector pad the type groove and the perforation that the inner core passed.

Optionally, the diameter of the through hole is larger than the outer diameter of the sleeve, and the inner diameter of the sleeve is larger than the diameter of the inner core.

Optionally, a fixing sleeve for fixing the claw group is installed at one end of the ferrule close to the needle seat, a protrusion is formed at one end of the fixing sleeve and inserted into the needle seat, and the T-shaped block can move back and forth in the protrusion.

Optionally, the both ends of connector have joint portion and screw thread portion respectively, the one end of connector is passed through joint portion detachably joint in the cuff, the other end of connector passes through screw thread portion with handle threaded connection.

Optionally, the forceps are opened when the group of blades is in an open umbrella shape, and the forceps are closed when the group of blades is in a closed umbrella shape.

Optionally, each transition of bending in proper order between tip, middle part and the afterbody of claw piece, the middle part of claw piece towards be close to the handle the direction with the tip of claw piece is bent the transition, the afterbody of claw piece towards keep away from the handle the direction with the middle part of claw piece is bent the transition, the middle part of claw piece is the circular arc bending.

The utility model discloses technical scheme's beneficial effect is:

the utility model discloses a set up 360 claw piece groups on the circumferencial direction of cuff for the claw piece atress is even stable when mediating, avoids axial or radial unnecessary to remove. The inner core is clamped by the claw sheets, and the inner core is loosened by loosening the claw sheets, so that the operation is portable. The handle and the hoop are detachably arranged, so that surgical instruments with claw sheets with different structures or tools with different inner core heads can be conveniently replaced in different operations.

Drawings

FIG. 1 is a schematic view of an ophthalmic microsurgical instrument in an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A in FIG. 1;

FIG. 3 is an enlarged view of a portion of an ophthalmic microsurgical instrument in accordance with an embodiment of the present invention;

fig. 4 is a schematic structural view of the push block in the embodiment of the present invention;

fig. 5 is a schematic view of an ophthalmic microsurgical instrument in another embodiment of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Referring to fig. 1, 2 and 3, an ophthalmologic microsurgical instrument is shown, which comprises a needle holder 1, a ferrule 2, a connector 7 and a handle 4, which are detachably connected in sequence; the end part of the needle base 1 is inserted with a sleeve 5, the hoop 2 is movably provided with a claw sheet group 3 in the circumferential direction, and the needle base 1 is internally provided with a push block 10; an inner core 6 is penetratingly arranged in the sleeve 5, the head of the inner core 6 is provided with a nipper 61, and the tail of the inner core 6 is exposed out of the sleeve 5 and fixed in the needle seat 1; a sliding block 30 is arranged in the needle base 1 and close to the position of the sleeve 5, a through hole (not shown) for inserting the sleeve 5 and passing through the inner core 6 is arranged on the sliding block 30 in a penetrating manner, a spring 40 is sleeved outside the sliding block 30, and two ends of the spring 40 respectively abut against the inner wall of the needle base 1 and a flange 301 of the sliding block 30; a T-shaped block 9 is movably arranged in the hoop 2, two ends of the T-shaped block 9 are respectively connected with the claw sheet group 3 and the push block 10, and one end of the push block 10, which is connected with the T-shaped block 9, is contacted with the sliding block 30; the claw group 3 controls the T-shaped block 9 to move, the T-shaped block 9 pushes the push block 10 to move, the push block 10 pushes the slide block 30 to move, the sleeve 5 and the slide block 30 move synchronously, the sleeve 5 contracts the forceps 61 in the moving process, and the forceps 61 are clamped.

In this embodiment, the claw sheet set 3 includes a plurality of claw sheets 33 which are arranged around the sidewall of the ferrule 2 in an umbrella shape and movably mounted in the ferrule 2; each claw piece 33 is formed with a rotary groove 31 and an insert 32 on both sides of one end in the ferrule 2, the ferrule 2 is formed with an inner protrusion 21 having a shape matching the contour of the rotary groove 31 at a position where each claw piece 33 is mounted, and each claw piece 33 is rotatably mounted in the ferrule 2 by the engagement of the inner protrusion 21 with the rotary groove 31; the T-shaped block 9 is provided with an insertion groove 91 at a position connected with each claw piece 33, and the insertion piece 32 of each claw piece 33 is inserted into the insertion groove 91 and connected with the T-shaped block 9; each claw piece 33 rotates around the inner protrusion 21 to approach or separate from the handle 4, when each claw piece 33 approaches the handle 4, the claw piece set 3 is in a closed umbrella shape, and the insert 32 rotates towards the rotation direction of each claw piece 33 and pushes the T-shaped block 9 towards the same side of the rotation direction of the insert 32.

In this embodiment, at least two positioning pins 20 are installed in the needle holder 1, and a space (not shown) for fixing the tail of the inner core 6 is formed between the at least two positioning pins 20; each of the pins 20 is threaded into the hub 1 and at least two pins 20 are tightened against each other to clamp the tail of the plunger 6 in the space (not shown).

In this embodiment, as shown in fig. 4, two

ends

102, 101 of the pushing block 10 respectively contact the sliding block 30 and the T-shaped block 9, an avoidance hole 103 for the positioning pin 20 to pass through is vertically penetratingly disposed at a central position of the pushing block 10, a length of the avoidance hole 103 is greater than a stroke distance of the T-shaped block 9, and two ends of the pushing block 10 are respectively provided with a groove 104 and a through hole 105 for the inner core 6 to pass through.

In this embodiment, the diameter of the through hole (not shown) is larger than the outer diameter of the sleeve 5, and the inner diameter of the sleeve 5 is larger than the diameter of the inner core 6.

In this embodiment, a fixing sleeve 8 for fixing the claw group 3 is installed at one end of the ferrule 2 close to the needle holder 1, a protrusion 81 is formed at one end of the fixing sleeve 8 and inserted into the needle holder 1, and the T-shaped block 9 can move back and forth in the protrusion 81.

In this embodiment, the two ends of the connector 7 are respectively provided with a clamping portion 71 and a threaded portion 72, one end of the connector 7 is detachably clamped in the ferrule 2 through the clamping portion 71, and the other end of the connector 7 is in threaded connection with the handle 4 through the threaded portion 72.

In this embodiment, the forceps 61 are opened when the claw piece group 3 is in the open umbrella shape, and the forceps 61 are closed when the claw piece group 3 is in the closed umbrella shape.

In this embodiment, the end, the middle and the tail of each claw piece 33 are sequentially bent and transitioned, the middle of each claw piece 33 is bent and transitioned with the end of the claw piece 33 in the direction close to the handle 4, the tail of each claw piece 33 is bent and transitioned with the middle of each claw piece 33 in the direction away from the handle 4, and the middle of each claw piece 33 is curved in an arc shape.

There is also provided in this embodiment a method of operating an ophthalmic microsurgical instrument according to any preceding claim, wherein the method of operation is as follows:

when the tweezers 61 need to be clamped, an index finger, a middle finger and a thumb of an operator are respectively pinched on the claw piece group 3, the index finger, the middle finger and the thumb are relatively pressed with force to deform the claw piece group 3 from an open umbrella shape to a closed umbrella shape, each claw piece 33 rotates towards the direction close to the handle 4 by taking the inner protrusion 21 as a circle center, the inserting piece 32 drives the T-shaped block 9 to move towards the direction far from the handle 4, the T-shaped block 9 pushes the push block 10 to move towards the direction far from the handle 4, the push block 10 pushes the sliding block 30 to move towards the direction far from the handle 4, and the sleeve 5 and the sliding block 30 synchronously move towards the direction far from the handle 4 until the sleeve 5 contracts, closes and;

the forefinger, the middle finger and the thumb are relaxed, the sliding block 30 moves towards the direction close to the handle 4 due to the rebounding force of the spring 40, meanwhile, the sleeve 5 moves towards the direction close to the handle 4 and loosens the tweezers 61, the tweezers 61 are opened, the sliding block 30 pushes the push block 10 to move towards the direction close to the handle 4, the push block 10 pushes the T-shaped block 9 to move towards the direction close to the handle 4, and the T-shaped block 9 drives each claw piece 33 to rotate towards the direction away from the handle 4 by taking the inner protrusion 21 as the center of a circle until the claw piece group 3 is in an open.

To sum up, the utility model discloses a set up 360 claw piece groups on the circumferencial direction of cuff for the claw piece atress is even stable when mediating, avoids axial or radial unnecessary to remove. The inner core is clamped by the claw sheets, and the inner core is loosened by loosening the claw sheets, so that the operation is portable. The handle and the hoop are detachably arranged, so that surgical instruments with claw sheets with different structures or tools with different inner core heads can be conveniently replaced in different operations. In addition, the ophthalmologic microsurgical instrument in the embodiment is suitable for operations requiring a vertical surgical instrument, and the forefinger, the middle finger and the thumb are respectively pinched on the claw piece group 3, and the knuckle of the middle finger part is supported on the concave part of the transition position of the middle part and the tail part of the claw piece 33, so that the ophthalmologic microsurgical instrument is more stable and is not easy to shake when being held by hands.

The utility model discloses aim at solving the conventional "A" style of calligraphy structure of ocular surface surgical instruments, let the ocular surface operation also can realize the minimal access surgery of round tube formula, whole operation in-process, the switching of surgical instruments can not influence the incision. And simultaneously, the utility model discloses when gripping, owing to be 360 no dead angle atress, make the atress more even among the whole operation process, can not cause the axial or radial unnecessary motion among the operation process to damage eyes inner structure, the doctor can adjust surgical instruments's direction at any time according to the demand in the operation direction moreover, and the direction that grips need not change, makes the doctor can keep the operation demand of good state completion all directions of gripping.

In addition, the utility model discloses constitute by head and handle two parts, the head can be according to the operation demand of difference, tear open the apparatus that changes different usage into, if need when tweezers, as long as with the head change tweezers can. Without causing confusion caused by a large number of surgical instruments on the operating table.

In another embodiment, as shown in fig. 5, the ophthalmic microsurgical instrument with the claw sheet sets with different structures comprises a needle seat 1 ', a hoop 2', a connector 7 'and a handle 4' which are detachably connected in sequence; the end of the needle base 1 'is inserted with a sleeve 5', the hoop 2 'is movably provided with a claw sheet group 3' in the circumferential direction, the sleeve 5 'is internally provided with an inner core 6' in a penetrating way, and the claw sheet group 3 'has the structure that the whole shape is like an open umbrella, and the tail end of the claw sheet group shrinks towards the handle 4', and is suitable for horizontal operation.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. An ophthalmic microsurgical instrument comprising:

2. The ophthalmic microsurgical instrument of claim 1,

the claw sheet group comprises a plurality of claw sheets which are arranged around the side wall of the hoop in an umbrella-shaped manner and movably arranged in the hoop;

3. The ophthalmic microsurgical instrument of claim 1, wherein at least two locating pins are mounted in the needle hub, and a space for fixing the tail of the inner core is formed between the at least two locating pins; each positioning pin is in threaded connection with the inside of the needle seat, and at least two positioning pins are screwed relatively and clamp and fix the tail part of the inner core in the space.

4. The ophthalmic microsurgical instrument of claim 3, wherein two ends of the push block are respectively in contact with the sliding block and the T-shaped block, an avoidance hole for the positioning pin to pass through is vertically and penetratingly formed in the central position of the push block, the length of the avoidance hole is larger than the stroke distance of the T-shaped block, and a groove and a through hole for the inner core to pass through are respectively formed in two ends of the push block.

5. The ophthalmic microsurgical instrument of claim 1, wherein the diameter of the through-hole is greater than the outer diameter of the cannula, and the inner diameter of the cannula is greater than the diameter of the inner core.

6. The ophthalmic microsurgical instrument of claim 1, wherein a fixing sleeve for fixing the group of claws is mounted at one end of the ferrule close to the needle holder, a protrusion is formed at one end of the fixing sleeve and inserted into the needle holder, and the T-shaped block is movable back and forth in the protrusion.

7. The ophthalmic microsurgical instrument of claim 1, wherein both ends of the connector respectively have a clamping portion and a threaded portion, one end of the connector is detachably clamped in the ferrule through the clamping portion, and the other end of the connector is in threaded connection with the handle through the threaded portion.

8. The ophthalmic microsurgical instrument of claim 2, wherein the forceps are open when the set of jaws is open umbrella shaped, and the forceps are closed when the set of jaws is closed umbrella shaped.

9. The ophthalmic microsurgical instrument of claim 8, wherein the end portion, the middle portion and the tail portion of each claw piece are sequentially bent and transitioned, the middle portion of each claw piece is bent and transitioned with the end portion of each claw piece in a direction close to the handle, the tail portion of each claw piece is bent and transitioned with the middle portion of each claw piece in a direction far from the handle, and the middle portion of each claw piece is curved in an arc.